“…A correlation between pain and depression has been highlighted in patients with traumatic brain injuries (Dobscha et al, 2009 ; Garden and Sullivan, 2010 ), complex regional pain syndrome (CRPS) type I and II (Lohnberg and Altmaier, 2013 ; Rewhorn et al, 2014 ), spinal cord injury (Craig et al, 2013 ; Avluk et al, 2014 ; Van Gorp et al, 2015 ), peripheral diabetic neuropathies (Yoshida et al, 2009 ; Rekleiti et al, 2013 ), muscular dystrophies (Alschuler et al, 2012 ), Parkinson's disease (Zhang et al, 2014 ; Kass-Iliyya et al, 2015 ; Mao et al, 2015 ; Rana et al, 2016 ), fibromyalgia (Scheidt et al, 2014 ), and post-herpetic neuralgia (Drolet et al, 2010 ). Moreover depression is associated with anxiety in patients with headache (Kröner-Herwig et al, 2008 ; Wieser et al, 2012 ). The presence of neuropathic components in the pain experienced by the patient correlates with higher values for depressive and anxious symptomatology (Radat et al, 2013 ; Shaygan et al, 2013 ; Uher and Bob, 2013 ); in case of complex conditions the comorbidity with major depressive disorder is high (Proctor et al, 2013 ).…”